VT30 Transmitter Operation Manual
Transcript of VT30 Transmitter Operation Manual
VT30/OM Rev-B
Operation Manual
VT30 Series
UHF, L, S, C-Band
Video / Audio Transmitters
Designed and Manufactured By
7025 Longley Lane, Suite 20Reno, NV 89511
Distributed By
107 Woodbine Down Blvd, Units 7&8
Toronto, ON M9W 6Y1
VT30/OM Rev-B
TABLE OF CONTENTS
1.0 Introduction......................................................................................................... 1
1.1 Purpose and Function............................................................................... 1
1.2 Capabilities .............................................................................................. 1
1.3 Specifications........................................................................................... 2
1.4 Mechanical Drawing and Connector Pin-Outs.......................................... 4
1.5 List of Items Furnished ............................................................................ 5
1.6 List of Items Required.............................................................................. 5
1.7 Environmental Requirements ................................................................... 5
2.0 Safety Precautions ............................................................................................... 5
3.0 Preparation for Use.............................................................................................. 6
3.1 Unpacking................................................................................................ 6
3.2 Pre-Test ................................................................................................... 7
4.0 Installation and Operating Instructions................................................................. 7
4.1 Use and Function of Connectors............................................................... 7
4.2 Use and Function of Switches .................................................................. 8
4.2.1 Frequency Selection Switches .................................................................. 8
4.2.2 Dual Power Switch .................................................................................. 8
4.2.3 Video Inversion Switch............................................................................ 9
4.2.4 Audio On/Off Switch(es) ......................................................................... 9
4.2.5 Line / Mic Audio Level Switch(es) .......................................................... 9
4.3 Use of Heat Sink .................................................................................... 10
4.4 Initial Adjustments and Settings ............................................................. 10
4.5 Shut Down............................................................................................. 10
5.0 Maintenance Instructions ................................................................................... 10
5.1 Cleaning ................................................................................................ 10
5.2 Troubleshooting ..................................................................................... 10
5.3 Preparation for Reshipment.................................................................... 11
5.4 Returning an Item .................................................................................. 11
Warranty Statement....................................................................................................... 12
Appendix A (Calculation of Safe Personal Distance from Antenna) .............................. 13
VT30/OM Rev-B 1
1.0 INTRODUCTION
Thank you for choosing this AMP Wireless Video Product. Every effort has been made
to design and manufacture a quality product that will meet your surveillance needs for
many years. Please visit our website (www.advmw.com/video) for information on other
video products and for downloadable datasheets, operation manuals, model number
builders, and frequency selection charts.
If you have any questions regarding this product or if you require technical assistance,
please feel free to contact us at the telephone numbers below:
Dyplex Communications Advanced Microwave Products
(416) 675-2002 (775) 345-9933
1.1 Purpose and Function
VT30 Series Video/Audio Transmitters are developed and manufactured by Advanced
Microwave Products (AMP) and distributed by Dyplex Communications (Dyplex).
Transmitters are designed for color or monochrome video and audio surveillance.
Transmitters are best operated with AMP’s VR75 Series Video Receivers but are
compatible with most other video receivers on the market.
1.2 Capabilities
AMP Transmitters are designed for harsh environments and feature robust packaging and
connectors. Compact package sizes provide versatility in unit placement and system
applications.
AMP Transmitters require no tuning or adjustments. All units operate directly with any
standard video camera. Power requirements are +9 to +16 Vdc and can be derived from
batteries, simple power supplies, or vehicle power.
Whip or “rubber duck” antennas are adequate for most transmitter applications. A
variety of standard and high performance antennas are available through Dyplex.
AMP Transmitters and Receivers are standard equipped with video inversion, selectable
via a slide switch, for a basic level of security.
VT30 Series Transmitters are available with many options allowing customization to
specific applications. Most common options include frequency selection (full band
selection), high RF output power (up to 2 Watts), dual power operation (any two power
levels), PAL video, and dual audio subcarriers with up to 100 kHz bandwidth.
If our standard products and options do not satisfy your requirements, please contact us.
Our experienced design team welcomes your custom specifications.
VT30/OM Rev-B 2
1.3 Specifications
RF CharacteristicsFrequency Range (Specify): UHF 340.00 - 399.90 MHz 100 kHz Channels
(Other Ranges Available) L-Band 1710.00 – 1850.00 MHz 250 kHz Channels
S-Band 2450.00 - 2483.50 MHz 250 kHz Channels
C-Band 4400.00 – 4999.75 MHz 250 kHz Channels
Frequency Selection (Specify): Fixed or Channelized, Full Band, Slide Switch Selectable
Frequency Stability: ±0.002% Over -20°C to +50°C
Output Power (Specify): 250 mW, 500 mW, 1 W, 2 W, or Dual Power (Any 2 Levels,
Slide Switch Selectable)
Output Impedance: 50 _ Nominal, VSWR 1.5:1 Maximum
Output Protection: UHF None – 20:1 VSWR Indefinitely
L/S/C Internal Isolator - Open/Short Indefinitely
Spurious Output: -13 dBm Maximum
Video CharacteristicsModulation Type: Analog FM
Modulation Sense: Standard (Positive) or Inverted (Negative), Slide Switch Selectable
Frequency Response (Specify): 10 Hz to 3.5 MHz (Monochrome), 4.5 MHz (NTSC), or 5.5 MHz
(PAL), ±1.5 dB
Pre-Emphasis (Specify): 525-Line (NTSC), 625-Line (PAL), or None
Modulation Sensitivity: ±4 MHz / 1 Vpk-pk @ Crossover Frequency
Input Impedance: 75 _ Nominal, Unbalanced, Shunted by 30 pF Maximum
Distortion: 2% Maximum
Incidental FM: 10 kHz Maximum
Audio CharacteristicsSubcarriers (Specify): One or Two
Subcarrier Frequency (Specify): 4.83, 5.8, 6.0, 6.2, 6.5, 6.8, 7.2, 7.5, 8.3, 8.5, or 8.59 MHz, or Custom
Subcarrier Separation (Two): 700 kHz Minimum
Frequency Stability: ±0.5% Over -20°C to +50°C
Subcarrier Insertion Level: -26 dBc Nominal
Subcarrier On/Off Control: Slide Switch Selectable
Modulation Type: Analog FM, Positive Sense
Frequency Response (Specify): 20 Hz to 10 kHz (Audio) or 100 kHz (Data), ±1.5 dB
Pre-Emphasis (Specify): 75 sec (NTSC) or 50 sec (PAL)
Modulation Sensitivity: 100 kHz pk-pk @ 1 kHz rate, Mic (-70 to -20 dBm) or Line (-10 dBV)
Input Impedance: 4.7 k_ Minimum, Unbalanced
Input Level: Line or Mic, Slide Switch Selectable
Mic Supply Output (Specify): 1.5 Vdc, 3.3 Vdc, or 5.0 Vdc
VT30/OM Rev-B 3
Power RequirementsInput Voltage: +9 to +16 Vdc, Reverse Polarity Protected
Current Draw: UHF/L/S-Band 200 mA, 350 mA, 600 mA, 800 mA (for 250 mW, 500 mW, 1 W, 2 W)
(Maximum) C-Band 275 mA, 450 mA, 700 mA, 900 mA (for 250 mW, 500 mW, 1 W, 2 W)
On/Off Control: Open = Off, Ground = On
MechanicalMaterial: CNC Machined T6061-T6 Nickel Plated Aluminum
Dimensions: 2.50” W x 3.50” L x 0.35” H
Weight: 2.5 oz. Maximum
Connectors: RF Output: SMA Female
Video Input: SSMA Female (Others Available)
DC Supply, On/Off: MDM-9P
Audio/Mic Supply: MDM-9S
EnvironmentalTemperature (Operating): -20°C to +50°C
Humidity: Up to 95% @ Any Temperature Forming Frost or Condensation
VT30/OM Rev-B 4
1.4 Mechanical Drawing and Connector Pin-Outs
VT30/OM Rev-B 5
1.5 List of Items Furnished
1-Transmitter
1-Type SSMA Plug (Male, SMB Optional) to BNC Jack (Female) Video Adapter Cable
1-Type BNC Plug (Male) to BNC Plug (Male) Video Cable
1-Type MDM-9S (Socket) DC Power Cable
1-Type MDM-9P (Pin) Audio Cable
1-Heatsink (if required / purchased)
1.6 List of Items Required
Antenna, Type SMA Plug (Male) Connector
Camera, Type BNC Jack (Female) Connector
Video connector adapter to BNC, if camera does not have BNC connector
Microphone(s)
1.7 Environmental Requirements
AMP Transmitters are designed for indoor or outdoor use. Precautions should be taken
when exposing transmitters to the elements. Do not expose to 100% humidity.
Transmitters should be located in areas where the ambient temperature does not exceed
the maximum operating temperature indicated in the specifications (Section 1.4).
Placement in confined locations with minimal air flow, in direct sunlight in areas of
temperature extremes, or in proximity to other devices which generate heat, such as
power supplies, heating systems, etc., should be avoided. Temperatures exceeding
+75°C may cause permanent damage to the equipment.
When not used for extended periods of time external connections, including power cable,
video cable, and antenna, should be removed and the units covered, boxed, or crated and
stored in a clean, dry place. See Section 1.7 above for environmental requirements.
2.0 SAFETY PRECAUTIONS
Transmitters should be handled with caution like any electrical or electronic device. Do
not handle the units or associated cabling with wet hands or materials.
Connections should be made only to previously-tested, active power sources (outlets or
batteries) of the correct voltage, and each connector should be inserted only into its
designated port. All connections should be checked to ensure they are firmly in place.
WARNING! RF RADIATION HAZARD
In order to keep the RF Exposure within the FCC 1.1310 limit, a safe personal
distance from the antenna must be maintained according to the below tables. The
first table is for transmitters operating 1500 MHz or higher where the Maximum
Permissible Exposure (MPE) is 10 Watts/meter2. The second table is for
transmitters operating in the 340-400 MHz range where the MPE is 2.27
Watts/meter2. See Appendix A for details on calculation of safe personal distances.
VT30/OM Rev-B 6
Operating Frequency 1500 MHz and Higher (MPE = 10 W/m2)
Transmitter Power Transmitter Power Transmitter Power Transmitter Power
0.25 Watts 0.5 Watts 1 Watt 2 Watts
Antenna Minimum Minimum Minimum Minimum
Gain EIRP Distance EIRP Distance EIRP Distance EIRP Distance
(dBi) (Watts) (Meters) (Watts) (Meters) (Watts) (Meters) (Watts) (Meters)
0 0.25 >0.20 0.50 >0.20 1.00 >0.20 2.00 >0.20
2 0.40 >0.20 0.79 >0.20 1.58 >0.20 3.17 >0.20
5 0.79 >0.20 1.58 >0.20 3.16 >0.20 6.32 0.22
10 2.50 >0.20 5.00 >0.20 10.0 0.28 20.0 0.40
15 7.91 0.25 15.8 0.35 31.6 0.50 63.2 0.71
20 25.0 0.45 50.0 0.63 100.0 0.89 200.0 1.26
25 79.1 0.79 158.1 1.12 316.2 1.59 632.5 2.24
30 250.0 1.41 500.0 1.99 1000.0 2.82 2000.0 3.99
Operating Frequency 340 - 400 MHz (MPE = 2.27 W/m2)
Transmitter Power Transmitter Power Transmitter Power Transmitter Power
0.25 Watts 0.5 Watts 1 Watt 2 Watts
Antenna Minimum Minimum Minimum Minimum
Gain EIRP Distance EIRP Distance EIRP Distance EIRP Distance
(dBi) (Watts) (Meters) (Watts) (Meters) (Watts) (Meters) (Watts) (Meters)
0 0.25 >0.20 0.50 >0.20 1.00 >0.20 2.00 0.26
2 0.40 >0.20 0.79 >0.20 1.58 0.24 3.17 0.33
5 0.79 >0.20 1.58 0.24 3.16 0.33 6.32 0.47
10 2.50 0.30 5.00 0.42 10.0 0.59 20.0 0.84
15 7.91 0.53 15.8 0.74 31.6 1.05 63.2 1.49
20 25.0 0.94 50.0 1.32 100.0 1.87 200.0 2.65
25 79.1 1.66 158.1 2.35 316.2 3.33 632.5 4.71
30 250.0 2.96 500.0 4.19 1000.0 5.92 2000.0 8.37
MAINTAIN A SAFE PERSONAL DISTANCE FROM THE ANTENNA WHILE
TRANSMITTER IS OPERATIONAL.
FAILURE TO MAINTAIN A SAFE PERSONAL DISTANCE FROM THE
ANTENNA MAY RESULT IN PERSONAL INJURY.
3.0 PREPARATION FOR USE
3.1 Unpacking
Carefully remove the transmitter from the shipping container and make sure all listed
furnished items are included (Section 1.5). Inspect all items for damage. If any item is
omitted from the shipment or appears damaged, contact Dyplex or AMP with detailed
description of problem.
VT30/OM Rev-B 7
3.2 Pre-Test
Although each unit is thoroughly tested at the factory for both functional and
environmental performance, a minimal amount of pre-testing should be done by the
operator before placing the transmitter into service. The transmitter, an appropriate AMP
receiver, transmit and receive antennas, a video camera, a video monitor, a microphone, a
speaker or headphones, and DC power supplies are the only components required to
perform a functional test of the transmitter.
The transmit and receive antennas should be situated at a distance of greater than 25 feet
apart to prevent serious damage to or destruction of the receiver’s front end. Set up the
receiver and make all necessary adjustments in accordance with that unit’s Operation
Manual. Connect the receiver video output to the video monitor and the receiver audio
output to the speaker or headphones.
If using remote control, connect remote control to the On/Off Control line (white wire in
DC Power Cable). If not using remote control, connect the On/Off Control line to power
or chassis ground.
Verify DC power supplies are between +9 and +16 Vdc. With the DC Power Cable
(MDM-9S connector) DISCONNECTED from the transmitter, connect DC power supply
to DC Power Cable (red = positive DC input, black = negative DC input (ground)). Do
not connect DC Power Cable to transmitter until all other connections are complete.
Connect the transmit antenna to transmitter RF output connector (SMA). Connect the
Video Adapter Cable to the transmitter video input connector (SSMA, SMB optional).
Connect the Video Cable between the Video Adapter Cable and video camera. Connect
the microphone to the Audio Cable (MDM-9P connector) and Audio Cable to the
transmitter (mates to MDM-9S connector on transmitter). Refer to Section 4.1 for Audio
Cable wiring.
Configure switches as instructed in Section 4.2. Connect DC Power Cable to transmitter
(mates to MDM-9P connector on transmitter). If not using remote control, video should
be observed on the monitor and audio heard through the speaker / headphones once the
transmitter locks on frequency (requires several seconds). If using remote control, the
On/Off Control line must be enabled (grounded or <0.8 Vdc) before video and audio will
be present.
If no video or audio is present, refer to Section 5.2 for troubleshooting instructions.
4.0 INSTALLATION AND OPERATING INSTRUCTIONS
4.1 Use and Function of Connectors
AMP Transmitters are simple to install, requiring only connection to the antenna, camera,
microphone, and DC power supply using the appropriate cables and jacks. The use and
function of the transmitter connectors are as follows:
VT30/OM Rev-B 8
POWER CONNECTOR (MDM-9P)
Mate: Supplied MDM-9S Power Cable
Red Wire – Positive DC Input (+9 to +16 Vdc)
Black Wire – Negative DC Input (Ground)
White Wire – On/Off Control(Ground or <0.8 Vdc for On, Open for Off)
AUDIO CONNECTOR (MDM-9S)
Mate: Supplied MDM-9P Audio Cable
Red Wire – Mic 1 Supply Output
Yellow Wire – Audio 1 Input (Mic or Line)
Orange Wire – Mic 2 Supply Output
Violet Wire – Audio 2 Input (Mic or Line)
Black Wire(s) – Ground (1 per subcarrier)
VIDEO CONNECTOR (SSMA)SMB Connector Optional
Mate: Supplied Video Adapter Cable
Standard 75 Ohm Video Input
Accepts Standard 1 Vpk-pk Video Signal
RF OUTPUT CONNECTOR (SMA)
Mate: Appropriately Selected SMA Antenna
Standard 50 Ohm RF Output
Outputs Nominal RF Power Level to Antenna
4.2 Use and Function of Switches
4.2.1 Frequency Selection Switches:
Frequency selectability is an option on all VT30 Series Transmitters providing RF
frequency control with slide switches accessible through the chassis lid. S-Band units
utilize 8 slide switches; UHF, L-Band, and C-Band units utilize 12 slide switches. Each
switch is uniquely identified (FS1 through FS8, or FS1 through FS12) on the unit label.
To program the desired RF frequency, position the individual switches as shown in the
applicable Frequency Selection Chart, included with product shipment and available as a
download on the applicable Video Product Page of our website
(www.advmw.com/video).
4.2.2 Dual Power Switch:
VT30 Series Transmitters may be ordered with nominal RF output power of 250 mW,
500 mW, 1 Watt, or 2 Watts and may be optionally configured for dual power operation
utilizing any two power levels. RF output power level is controlled with a slide switch
accessible through the chassis lid. Switch is inactive if this option is not purchased.
To select the higher RF output power level, position the slide switch to HIGH PWR as
indicated on the unit label. To select the lower RF output power level, position the slide
switch to LOW PWR as indicated on the unit label.
L, S, and C-band VT30 Series Transmitters operating at 2 Watts incorporate an automatic
power “fold back” circuit to protect the unit in case of high VSWR loads (such as RF
short, RF open, broken antenna, wrong antenna, etc.). In the event of a high VSWR load
causing greater than 1 Watt power reflection, the RF output power is automatically
reduced to below 1 Watt to avoid excessive heat and potential damage to the unit. The
“fold back” circuit attempts to restore the RF output power to its normal level every 1
millisecond, checking each time whether the high VSWR load has been repaired.
VT30/OM Rev-B 9
4.2.3 Video Inversion Switch:
All AMP Transmitters and Receivers are standard equipped with video inversion,
selectable with a slide switch accessible through the chassis lid. When selected, the
phase of the video signal is inverted (shifted 180o) in the transmitter and re-inverted in
the receiver, providing a basic level of security. If an inverted video signal is detected by
a receiver not configured for inversion, the resulting picture is scrambled.
To select standard video (no inversion), position the slide switch to VIDEO STD as
indicated on the unit label. To select inverted video (phase inversion), position the slide
switch to VIDEO INV as indicated on the unit label.
The video inversion switch position on AMP’s Receivers must match that of the
transmitter or the picture will appear scrambled. If using AMP’s Transmitters with other
receivers or vice-versa, position the Video Inversion slide switch to VIDEO STD.
4.2.4 Audio On/Off Switch(es):
VT30 Series Transmitters are standard equipped with one audio subcarrier. A second
audio subcarrier is optional. Each subcarrier is individually enabled / disabled with a
slide switch accessible through the chassis lid. When enabled, the audio signal applied to
the audio input is transmitted. When disabled, the subcarrier signal is not produced, and
no audio is transmitted.
To enable audio transmission, position the corresponding slide switch to AUDIO ON as
indicated on the unit label. To disable audio transmission, position the corresponding
slide switch to AUDIO OFF as indicated on the unit label.
When two subcarriers are specified, Audio On/Off switches are designated as AUDIO-1
ON / AUDIO-1 OFF and AUDIO-2 ON / AUDIO-2 OFF on the unit label.
4.2.5 Line / Mic Audio Level Switch(es):
VT30 Series Transmitters accept either Line or Microphone Level audio inputs. Audio
level for each subcarrier is individually controlled with a slide switch accessible through
the chassis lid. When set to Line, the audio input circuitry adjusts to accept standard Line
Level (-10 dBV) audio. When set to Mic, the audio input circuitry adjusts to accept
typical Microphone Levels (-70 thru -20 dBm) with automatic level control (ALC).
To adjust the audio input to Microphone Level for either subcarrier, position the
corresponding slide switch to MIC as indicated on the unit label. To adjust the audio
input to Line Level for either subcarrier, position the corresponding slide switch to LINE
as indicated on the unit label.
When two subcarriers are specified, Audio Level switches are designated as AUDIO-1
LINE / AUDIO-1 MIC and AUDIO-2 LINE / AUDIO-2 MIC on the unit label.
VT30/OM Rev-B 10
When 100 kHz subcarrier frequency response is specified on either or both subcarriers,
the Audio Level switch for the corresponding subcarrier(s) is inactive and the 100 kHz
data is transmitted at a constant FM deviation sensitivity (no ALC).
4.3 Use of Heat Sink
VT30 Series Transmitters operating at or over 500 mW RF output power must utilize
AMP Heat Sink VH2505 (0.5” high) or be securely fastened to an adequate heat sinking
object or surface. VT30 transmitters should be fastened to AMP heat sinks using
provided 4-40x5/16” pan head or socket head screws with #4 lock washers. Use of
thermal grease, such as Wakefield Engineering 120 Series Thermal Compound, to
improve thermal conduction between transmitter baseplate and heat sinking surface will
reduce unit temperature and increase product reliability.
Caution: Failure to provide adequate heat sinking VOIDS PRODUCT
WARRANTY.
4.4 Initial Adjustments and Settings
There are no initial adjustments or settings necessary to use AMP Transmitters other than
proper configuration of the slide switches as outlined above in Section 4.2. To assure
optimum performance, the user should be familiar with the camera, monitor, microphone,
and speaker/headphones used with this video/audio system.
4.5 Shut Down
If the transmitter is to be shut down only briefly, simply remove DC voltage from the DC
Power Cable or disconnect DC Power Cable from transmitter. If the unit is to be shut
down for an extended period, all external cabling including the antenna should be
removed and the unit should be stored in a container and placed in a clean, dry
environment.
5.0 MAINTENANCE INSTRUCTIONS
5.1 Cleaning
AMP Transmitters should be periodically wiped off with a clean, damp cloth. For more
thorough cleaning, dampen a clean cloth with glass cleaner and wipe off unit. Ensure
units are completely disconnected from their power sources before cleaning.
5.2 Troubleshooting
To avoid poor performance, ensure all transmitter and mating connectors are tightly
fastened, clean, and have no pins bent or damaged.
Verify configuration of all slide switches (refer to Section 4.2).
VT30/OM Rev-B 11
If poor or no operation is observed, ensure the external DC voltage supply is between +9
and +16 Vdc with correct polarity. All AMP Transmitters have over-voltage and reverse
polarity protection circuits. If the input voltage is over +16 Vdc, remove the DC Power
Cable from the transmitter, reduce the DC voltage to between +9 and +16 Vdc, and
reconnect the DC Power Cable. If the input voltage is negative polarity, remove the DC
Power Cable from the transmitter, reverse the connections between the DC voltage
supply and DC Power Cable, and reconnect the DC Power Cable.
If all connections are adequate, switches are correctly configured, and DC voltage is
correctly applied, check the video camera, video cable, and antenna for damage. A
monitor may be connected directly to the camera to verify proper camera operation. If
receiving video but no audio, check connections between microphone and Audio Cable.
Also check microphone and Audio Cable for damage.
If these efforts fail, do not attempt to repair the unit. Please contact Dyplex or AMP
with a detailed description of the problem. Depending on the nature of the problem,
Dyplex or AMP may provide further troubleshooting assistance or advise the entire
system be returned for repair and retest.
Caution: Removal of the cover constitutes breaking the seal and VOIDS PRODUCT
WARRANTY.
5.3 Preparation for Reshipment
If the transmitter and/or any other purchased item(s) are to be shipped to another location
or returned for repair or realignment, use the original packaging or a sturdy box with
sufficient protective material to avoid damage from movement or exposure during transit.
Remove all external connections (cables, antenna, etc.) prior to shipping.
5.4 Returning an Item
Please contact Dyplex customer service at (416) 675-2002 for a Return Authorization
Number before returning an item. The Dyplex ship-to address is listed below. When
returning an item, always include a contact name and phone number and a detailed
description of the problem with your shipment.
Dyplex Communications
107 Woodbine Downs Blvd, Units 7 & 8
Etobicoke, Ontario,
Canada M9W 6Y1
VT30/OM Rev-B 12
WARRANTY STATEMENT
Advanced Microwave Products (AMP) warrants these products to be free from defects in
material and workmanship for a period of one year from date of original shipment. AMP
shall, at its option, either repair or replace products which prove to be defective.
No products may be returned to AMP without the permission of AMP. BUYER, after
obtaining a return authorization from AMP, shall return the equipment to AMP
accompanied by a report stating as completely as possible the reason for return, the
defects, and the conditions under which they occurred. BUYER shall pay all shipping
charges, duties, and fees for the return of products to AMP. All warranty services will be
carried out at AMP’s facility. AMP will pay for the return of products to the BUYER.
All articles are to be properly and carefully inspected by BUYER upon receipt. Shipping
container damage may indicate equipment damage. All shipping damage must be
promptly reported to the carrier. AMP is not liable for shipping damage.
Limitation of Warranty: The above warranty does not apply to defects of, or resulting
from the following:
1) End items included as part of a system, but not designed by, AMP are subject
only to warranty as may be obtained from the original manufacturers. Such items
include, but are not limited to, batteries, cameras, monitors, cabling, etc.,
2) Operation outside of the environmental specifications of the product,
3) Unauthorized modifications, misuse, or mishandling,
4) Improper or inadequate maintenance by BUYER,
5) Improper or inadequate heat sinking by BUYER
6) Improper installation or improper testing,
7) Malfunction of connected hardware.
THIS WARRANTY IS EXCLUSIVE AND NO OTHER WARRANTY, WHETHER
WRITTEN OR ORAL, IS EXPRESSED OR IMPLIED. AMP SPECIFICALLY
DISCLAIMS THE IMPLIED WARRANTIES OR MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE.
The remedies set forth above are the purchaser’s sole and exclusive remedies. In no
circumstances shall AMP assume liability for loss, damage, or consequential expense
(including loss of profits) whether based on contract, tort, or any other legal theory,
arising directly or indirectly from the use of its equipment separately or in combination
with other equipment.
VT30/OM Rev-B 13
APPENDIX A
Calculation of Safe Personal Distance From Antenna
The Maximum Permissible Exposure (MPE) limit according to FCC 1.1310 is as follows:
Frequency Limit
30-1500 MHz F/150 W/m2 (where F is frequency in MHz)
1500 MHz – 100 GHz 10 W/m2
For VT50 Upper L-band, S-band, and C-band transmitters (all greater than 1500 MHz),
the MPE is 10 W/m2.
For VT50 Lower L-band transmitters, the operating frequency range is 1300-1600 MHz
resulting in a MPE of 8.67 W/m2 (the lowest MPE in the 1300-1600 MHz range occurs at
1300 MHz and is 1300/150 W/m2).
For VT50 UHF transmitters, the operating frequency range is 340-400 MHz resulting in a
MPE of 2.27 W/m2 (the lowest MPE in the 340-400 MHz range occurs at 340 MHz and
is 340/150 W/m2).
Using the formula for the Power Density S = EIRP/ 4 D2, the distance D, where the
Maximum Permissible Exposure (MPE) satisfies the FCC 1.1310 limit (S=MPE) for
General Population/Uncontrolled Exposure, can be calculated as:
D (EIRP/ 4 S) (meters)
where S is the MPE and EIRP is the Effective Isotropic Radiated Power, calculated as:
EIRP = 10(G/10)
P (Watts)
where G is the logarithmic antenna gain in dBi and P is the transmitter power in Watts.
The resulting safe personal distance calculation is:
D (10(G/10)
P/ 4 S) (meters).